Connors in his loss to Ashe at '75 Wimbledon: 48% on 1st serve, 55% on 2nd (thanks to Nadal_Power for this stat).

Connors in his win over Agenor at '91 RG: 50% on 1st serve, 63% on 2nd. This stat comes from the ATP so it could be wrong, but I'm posting it because in my survey of ATP stats I always found their stats from the 1991 season to be correct.

Nadal had lower success on 1st serve than on 2nd serve in each of his first two matches coming back from his layoff (in Vina del Mar). It has not happened again in his 6 matches since then; his 1st serve success in those first two matches was down at 63% and 65%, but it has been higher in all the subsequent matches. In fact he reached 90% success in his semi in Sao Paolo (d. Alund).

In his last two matches at the WTF Djokovic had higher success on second serve than on first. In each match it was a case of a good job on the second ball rather than a poor job on the first: against Wawrinka he was at 75% on 2nd serve; against Nadal he was at 70%.

Same deal this year against Mayer at Wimbledon (81% on 2nd) and Granollers at the USO (87%).

In the final Nishikori had greater success on second serve than on first. His success on second serve was almost as good as Cilic’s (59% vs 61%). But there was a gulf between the two players on first serve (55% vs 80%).

ZIELONA GORA, Poland (AP) - Five-time Grand Slam champion Martina Hingis played and lost her first competitive singles match since 2007 as Switzerland and Poland tied 1-1 on the first day of the Fed Cup World Group playoff on Saturday.